When it comes to describing a project that seems unnecessary or trivial, there are many synonyms beyond just "silly." These can include "foolish," "ridiculous," "pointless," "frivolous," "unnecessary," "trivial," and "meaningless." Other options might include "absurd," "daft," "ridiculous," "inane," "nonsensical," "senseless," or "foolhardy." Each of these words carries a slightly different connotation, from being playfully ridiculous to outright foolish or even dangerous. Ultimately, the right synonym may depend on the context and the severity of the project. However, they all capture a sense of frivolity or lack of significance, making them useful alternatives to the term "silly project".